If you are referring to the pendant lighting in the back, that is a chandelier by Bocci. There are many configurations and number of pendants that you can purchase, but I will include a link to get you started.
Concrete Masonry Units — CMU for short, but also known as concrete blocks or cinder blocks — are basically oversized bricks (typically 8" deep by 8" tall by 16" wide). They usually serve utilitarian purposes: retaining walls, foundations, structural bearing walls. Yet if considered and used properly, they can be left exposed alongside other materials, giving a house a semi-industrial appearance while also saving some money on additional finishes — of course depending on climate.
This room plays with the contrast between cool concrete and warm wood; the contrast between the warm brown backs and seats versus the cold chrome of the chairs makes them a playful pick for this contemporary space.
... a smaller nook lined in metal is created off the living room. This wall extends to the left towards the back door, parallel to the wall near the front door. In this house CMU is used as a means of orienting from front to back, while also containing fairly utilitarian spaces, such as the powder room and stairs.